Fig. 8

Example of the focal mechanism solution for an aftershock (MJMA3.9) that occurred at 7:52 Japan Standard Time on June 19, 2018. a, b Inferred DC beach-ball and uncertainty of its nodal planes in lower hemisphere projection, respectively. c Shows histogram of the DC component content as captured by the ensemble of solutions. The map in (d) reveals fit of the observed (colored circles) and synthetic (colored pentagons) amplitudes on stations (black points) for the best source model (black beach-ball). The size of each colored symbol is proportional to the amplitude, while color has meaning of its sign (see legend)